Shelving unit



FIG. 1 is a front elevational view of a shelving unit showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a horizontal cross-sectional view thereof, taken in the direction of line 3--3 of FIG. 1;

FIG. 4 is a right side elevational view thereof, the left side being substantially similar in appearance;

FIG. 5 is a vertical cross-sectional view thereof, taken in the direction of line 5--5 of FIG. 2; and

FIG. 6 is a perspective view thereof. 

The ornamental design for a shelving unit, as shown and described. 